string manipulation

Question

how to find out which character is similar between two string

Vulpes · Answer

Here's another way to do it: using System; using System.Linq; class Program { static void Main() { string s = strings; string t = strongly; char[] common = s.Intersect(t).ToArray(); Console.Write(The common characters are : ); foreach(char c in common) Console.Write(c); Console.ReadKey(); } } The output is: The common characters are : strng

Munesh Sharma · Answer

public int CommonCharacters ( string s1  string s2 ) { bool [] matchedFlag = new bool [ s2 . Length ]; for ( int i1 = 0 ; i1 s1 . Length ; i1 ++) { for ( int i2 = 0 ; i2 s2 . Length ; i2 ++) { if (! matchedFlag [ i2 ] && s1 . ToCharArray ()[ i1 ] == s2 . ToCharArray ()[ i2 ]) { matchedFlag [ i2 ] = true ; break ; } } } return matchedFlag . Count ( u => u ); }